Recent variations in oceanic transports across the Greenland–Scotland Ridge

Mayer, Michael; Tsubouchi, Takamasa; Winkelbauer, Susanna; Larsen, Karin Margretha H.; Berx, Barbara; Macrander, Andreas; Iovino, Doroteaciro; Jónsson, Steingrímur; Renshaw, Richard

doi:https://doi.org/10.5194/sp-1-osr7-14-2023

Articles | Volume 1-osr7

https://doi.org/10.5194/sp-1-osr7-14-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Report:

7th edition of the Copernicus Ocean State Report (OSR7)

https://doi.org/10.5194/sp-1-osr7-14-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 1-osr7

27 Sep 2023

| OSR7 | Chapter 4.2

| 27 Sep 2023 | OSR7 | Chapter 4.2

Recent variations in oceanic transports across the Greenland–Scotland Ridge

Michael Mayer, Takamasa Tsubouchi, Susanna Winkelbauer, Karin Margretha H. Larsen, Barbara Berx, Andreas Macrander, Doroteaciro Iovino, Steingrímur Jónsson, and Richard Renshaw

Data sets

Global Ocean Ensemble Physics Reanalysis v2 EU Copernicus Marine Service Product https://doi.org/10.48670/moi-00024

Global Ocean Physics Reanalysis GLORYS12V1 EU Copernicus Marine Service Product https://doi.org/10.48670/moi-00021

Global Ocean Gridded L 4 Sea Surface Heights And Derived Variables Reprocessed 1993 Ongoing EU Copernicus Marine Service Product https://doi.org/10.48670/moi-00148

Increased ocean heat transport into the Arctic Mediterranean over the period 1993-2016 T. Tsubouchi, K. Våge, B. Hansen, K. M. H Larsen, S. Østerhus, C. Johnson, S. Jónsson, and H. Valdimarsson http://metadata.nmdc.no/metadata-api/landingpage/0a2ae0e42ef7af767a920811e83784b1

Revised transport estimates of the Denmark Strait overflow (https://www.cen.uni-hamburg.de/en/icdc/data/ocean/denmark-strait-overflow.htm) K. Jochumsen, M. Moritz, N. Nunes, D. Quadfasel, K. M. H. Larsen, B. Hansen, H. Valdimarsson, and S. Jónsson https://doi.org/10.1002/2017JC012803

Increases in the Pacific inflow to the Arctic from 1990 to 2015, and insights into seasonal trends and driving mechanisms from year-round Bering Strait mooring data (http://psc.apl.washington.edu/HLD/Bstrait/bstrait.html) R. A. Woodgate https://doi.org/10.1016/j.pocean.2017.12.007

Short summary

This paper compares oceanic fluxes across the Greenland–Scotland Ridge (GSR) from ocean reanalyses to largely independent observational data. Reanalyses tend to underestimate the inflow of warm waters of subtropical Atlantic origin and hence oceanic heat transport across the GSR. Investigation of a strong negative heat transport anomaly around 2018 highlights the interplay of variability on different timescales and the need for long-term monitoring of the GSR to detect forced climate signals.